Transactions of Materials and Heat Treatment

Title：Study on forging technology preventing mixed grain structure defect in huge lower pressure steam turbine rotor

Authors： JIN Quan-lin

Unit： Advanced Manufacture Technology Center China Academy of Machinery Science & Technology Beijing 100083 China

KeyWords： huge lower pressure steam turbine rotor mixed grain structure defect hot forging technology numerical simulation grain size prediction

ClassificationCode：TG316

year,vol(issue):pagenumber：2012,37(4):8-13

Abstract：

The cause of the mixed grain structure defect in huge lower pressure steam turbine rotor was discovered, and a new forging technology to prevent the mixed grain structure defect was suggested. Two sets of forging processing parameters for 300MW and 1000MW LP steam turbine rotors were given and validated by production application and numerical prediction of grain size. Two state invention patents on above technologies have been authorized in China.

Funds：

机械部七五科技攻关资助项目（862A2014）；八五科技攻关资助项目（8530204041）；机械部基金资助项目（95JA0404）；科技部攀登B项目；国家重点基础研究发展计划资助项目（G2000067208-2，2006CB605208-3，2011CB606306-3）

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